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Message-ID: <YsQwHiVdooN2TWbh@google.com>
Date:   Tue, 5 Jul 2022 13:35:42 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Aidan MacDonald <aidanmacdonald.0x0@...il.com>
Cc:     linus.walleij@...aro.org, brgl@...ev.pl, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, wens@...e.org, jic23@...nel.org,
        sre@...nel.org, lgirdwood@...il.com, broonie@...nel.org,
        lars@...afoo.de, quic_gurus@...cinc.com,
        sebastian.reichel@...labora.com, andy.shevchenko@...il.com,
        michael@...le.cc, rdunlap@...radead.org,
        linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH v4 06/15] mfd: axp20x: Add support for AXP192

On Wed, 29 Jun 2022, Aidan MacDonald wrote:

> The AXP192 PMIC is similar to the AXP202/AXP209, but with different
> regulators, additional GPIOs, and a different IRQ register layout.
> 
> Acked-for-MFD-by: Lee Jones <lee.jones@...aro.org>
> Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@...il.com>
> ---
>  drivers/mfd/axp20x-i2c.c   |   2 +
>  drivers/mfd/axp20x.c       | 152 +++++++++++++++++++++++++++++++++++++
>  include/linux/mfd/axp20x.h |  84 ++++++++++++++++++++
>  3 files changed, 238 insertions(+)
> 
> diff --git a/drivers/mfd/axp20x-i2c.c b/drivers/mfd/axp20x-i2c.c
> index 00ab48018d8d..9ada58fad77f 100644
> --- a/drivers/mfd/axp20x-i2c.c
> +++ b/drivers/mfd/axp20x-i2c.c
> @@ -62,6 +62,7 @@ static int axp20x_i2c_remove(struct i2c_client *i2c)
>  #ifdef CONFIG_OF
>  static const struct of_device_id axp20x_i2c_of_match[] = {
>  	{ .compatible = "x-powers,axp152", .data = (void *)AXP152_ID },
> +	{ .compatible = "x-powers,axp192", .data = (void *)AXP192_ID },
>  	{ .compatible = "x-powers,axp202", .data = (void *)AXP202_ID },
>  	{ .compatible = "x-powers,axp209", .data = (void *)AXP209_ID },
>  	{ .compatible = "x-powers,axp221", .data = (void *)AXP221_ID },
> @@ -75,6 +76,7 @@ MODULE_DEVICE_TABLE(of, axp20x_i2c_of_match);
>  
>  static const struct i2c_device_id axp20x_i2c_id[] = {
>  	{ "axp152", 0 },
> +	{ "axp192", 0 },
>  	{ "axp202", 0 },
>  	{ "axp209", 0 },
>  	{ "axp221", 0 },
> diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
> index 8161a5dc68e8..6ab2a1f8888c 100644
> --- a/drivers/mfd/axp20x.c
> +++ b/drivers/mfd/axp20x.c
> @@ -34,6 +34,7 @@
>  
>  static const char * const axp20x_model_names[] = {
>  	"AXP152",
> +	"AXP192",
>  	"AXP202",
>  	"AXP209",
>  	"AXP221",
> @@ -92,6 +93,35 @@ static const struct regmap_access_table axp20x_volatile_table = {
>  	.n_yes_ranges	= ARRAY_SIZE(axp20x_volatile_ranges),
>  };
>  
> +static const struct regmap_range axp192_writeable_ranges[] = {
> +	regmap_reg_range(AXP192_DATACACHE(0), AXP192_DATACACHE(5)),
> +	regmap_reg_range(AXP192_PWR_OUT_CTRL, AXP192_IRQ5_STATE),
> +	regmap_reg_range(AXP20X_DCDC_MODE, AXP192_N_RSTO_CTRL),
> +	regmap_reg_range(AXP20X_CC_CTRL, AXP20X_CC_CTRL),
> +};
> +
> +static const struct regmap_range axp192_volatile_ranges[] = {
> +	regmap_reg_range(AXP20X_PWR_INPUT_STATUS, AXP192_USB_OTG_STATUS),
> +	regmap_reg_range(AXP192_IRQ1_STATE, AXP192_IRQ4_STATE),
> +	regmap_reg_range(AXP192_IRQ5_STATE, AXP192_IRQ5_STATE),
> +	regmap_reg_range(AXP20X_ACIN_V_ADC_H, AXP20X_IPSOUT_V_HIGH_L),
> +	regmap_reg_range(AXP20X_TIMER_CTRL, AXP20X_TIMER_CTRL),
> +	regmap_reg_range(AXP192_GPIO2_0_STATE, AXP192_GPIO2_0_STATE),
> +	regmap_reg_range(AXP192_GPIO4_3_STATE, AXP192_GPIO4_3_STATE),
> +	regmap_reg_range(AXP192_N_RSTO_CTRL, AXP192_N_RSTO_CTRL),
> +	regmap_reg_range(AXP20X_CHRG_CC_31_24, AXP20X_CC_CTRL),
> +};
> +
> +static const struct regmap_access_table axp192_writeable_table = {
> +	.yes_ranges	= axp192_writeable_ranges,
> +	.n_yes_ranges	= ARRAY_SIZE(axp192_writeable_ranges),
> +};
> +
> +static const struct regmap_access_table axp192_volatile_table = {
> +	.yes_ranges	= axp192_volatile_ranges,
> +	.n_yes_ranges	= ARRAY_SIZE(axp192_volatile_ranges),
> +};
> +
>  /* AXP22x ranges are shared with the AXP809, as they cover the same range */
>  static const struct regmap_range axp22x_writeable_ranges[] = {
>  	regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ5_STATE),
> @@ -173,6 +203,25 @@ static const struct resource axp152_pek_resources[] = {
>  	DEFINE_RES_IRQ_NAMED(AXP152_IRQ_PEK_FAL_EDGE, "PEK_DBF"),
>  };
>  
> +static const struct resource axp192_gpio_resources[] = {
> +	DEFINE_RES_IRQ_NAMED(AXP192_IRQ_GPIO0_INPUT, "GPIO0"),
> +	DEFINE_RES_IRQ_NAMED(AXP192_IRQ_GPIO1_INPUT, "GPIO1"),
> +	DEFINE_RES_IRQ_NAMED(AXP192_IRQ_GPIO2_INPUT, "GPIO2"),
> +};
> +
> +static const struct resource axp192_ac_power_supply_resources[] = {
> +	DEFINE_RES_IRQ_NAMED(AXP192_IRQ_ACIN_PLUGIN, "ACIN_PLUGIN"),
> +	DEFINE_RES_IRQ_NAMED(AXP192_IRQ_ACIN_REMOVAL, "ACIN_REMOVAL"),
> +	DEFINE_RES_IRQ_NAMED(AXP192_IRQ_ACIN_OVER_V, "ACIN_OVER_V"),
> +};
> +
> +static const struct resource axp192_usb_power_supply_resources[] = {
> +	DEFINE_RES_IRQ_NAMED(AXP192_IRQ_VBUS_PLUGIN, "VBUS_PLUGIN"),
> +	DEFINE_RES_IRQ_NAMED(AXP192_IRQ_VBUS_REMOVAL, "VBUS_REMOVAL"),
> +	DEFINE_RES_IRQ_NAMED(AXP192_IRQ_VBUS_VALID, "VBUS_VALID"),
> +	DEFINE_RES_IRQ_NAMED(AXP192_IRQ_VBUS_NOT_VALID, "VBUS_NOT_VALID"),
> +};
> +
>  static const struct resource axp20x_ac_power_supply_resources[] = {
>  	DEFINE_RES_IRQ_NAMED(AXP20X_IRQ_ACIN_PLUGIN, "ACIN_PLUGIN"),
>  	DEFINE_RES_IRQ_NAMED(AXP20X_IRQ_ACIN_REMOVAL, "ACIN_REMOVAL"),
> @@ -245,6 +294,15 @@ static const struct regmap_config axp152_regmap_config = {
>  	.cache_type	= REGCACHE_RBTREE,
>  };
>  
> +static const struct regmap_config axp192_regmap_config = {
> +	.reg_bits	= 8,
> +	.val_bits	= 8,
> +	.wr_table	= &axp192_writeable_table,
> +	.volatile_table	= &axp192_volatile_table,
> +	.max_register	= AXP20X_CC_CTRL,
> +	.cache_type	= REGCACHE_RBTREE,
> +};
> +
>  static const struct regmap_config axp20x_regmap_config = {
>  	.reg_bits	= 8,
>  	.val_bits	= 8,
> @@ -304,6 +362,42 @@ static const struct regmap_irq axp152_regmap_irqs[] = {
>  	INIT_REGMAP_IRQ(AXP152, GPIO0_INPUT,		2, 0),
>  };
>  
> +static const struct regmap_irq axp192_regmap_irqs[] = {
> +	INIT_REGMAP_IRQ(AXP192, ACIN_OVER_V,		0, 7),
> +	INIT_REGMAP_IRQ(AXP192, ACIN_PLUGIN,		0, 6),
> +	INIT_REGMAP_IRQ(AXP192, ACIN_REMOVAL,		0, 5),
> +	INIT_REGMAP_IRQ(AXP192, VBUS_OVER_V,		0, 4),
> +	INIT_REGMAP_IRQ(AXP192, VBUS_PLUGIN,		0, 3),
> +	INIT_REGMAP_IRQ(AXP192, VBUS_REMOVAL,		0, 2),
> +	INIT_REGMAP_IRQ(AXP192, VBUS_V_LOW,		0, 1),
> +	INIT_REGMAP_IRQ(AXP192, BATT_PLUGIN,		1, 7),
> +	INIT_REGMAP_IRQ(AXP192, BATT_REMOVAL,	        1, 6),
> +	INIT_REGMAP_IRQ(AXP192, BATT_ENT_ACT_MODE,	1, 5),
> +	INIT_REGMAP_IRQ(AXP192, BATT_EXIT_ACT_MODE,	1, 4),
> +	INIT_REGMAP_IRQ(AXP192, CHARG,		        1, 3),
> +	INIT_REGMAP_IRQ(AXP192, CHARG_DONE,		1, 2),
> +	INIT_REGMAP_IRQ(AXP192, BATT_TEMP_HIGH,	        1, 1),
> +	INIT_REGMAP_IRQ(AXP192, BATT_TEMP_LOW,	        1, 0),
> +	INIT_REGMAP_IRQ(AXP192, DIE_TEMP_HIGH,	        2, 7),
> +	INIT_REGMAP_IRQ(AXP192, CHARG_I_LOW,		2, 6),
> +	INIT_REGMAP_IRQ(AXP192, DCDC1_V_LONG,	        2, 5),
> +	INIT_REGMAP_IRQ(AXP192, DCDC2_V_LONG,	        2, 4),
> +	INIT_REGMAP_IRQ(AXP192, DCDC3_V_LONG,	        2, 3),
> +	INIT_REGMAP_IRQ(AXP192, PEK_SHORT,		2, 1),
> +	INIT_REGMAP_IRQ(AXP192, PEK_LONG,		2, 0),
> +	INIT_REGMAP_IRQ(AXP192, N_OE_PWR_ON,		3, 7),
> +	INIT_REGMAP_IRQ(AXP192, N_OE_PWR_OFF,	        3, 6),
> +	INIT_REGMAP_IRQ(AXP192, VBUS_VALID,		3, 5),
> +	INIT_REGMAP_IRQ(AXP192, VBUS_NOT_VALID,	        3, 4),
> +	INIT_REGMAP_IRQ(AXP192, VBUS_SESS_VALID,	3, 3),
> +	INIT_REGMAP_IRQ(AXP192, VBUS_SESS_END,	        3, 2),
> +	INIT_REGMAP_IRQ(AXP192, LOW_PWR_LVL,	        3, 0),
> +	INIT_REGMAP_IRQ(AXP192, TIMER,			4, 7),
> +	INIT_REGMAP_IRQ(AXP192, GPIO2_INPUT,		4, 2),
> +	INIT_REGMAP_IRQ(AXP192, GPIO1_INPUT,		4, 1),
> +	INIT_REGMAP_IRQ(AXP192, GPIO0_INPUT,		4, 0),
> +};
> +
>  static const struct regmap_irq axp20x_regmap_irqs[] = {
>  	INIT_REGMAP_IRQ(AXP20X, ACIN_OVER_V,		0, 7),
>  	INIT_REGMAP_IRQ(AXP20X, ACIN_PLUGIN,		0, 6),
> @@ -514,6 +608,32 @@ static const struct regmap_irq_chip axp152_regmap_irq_chip = {
>  	.num_regs		= 3,
>  };
>  
> +static unsigned int axp192_get_irq_reg(struct regmap_irq_chip_data *data,
> +				       unsigned int base, int index)
> +{
> +	/* linear mapping for IRQ1 to IRQ4 */
> +	if (index < 4)
> +		return base + index;
> +
> +	/* handle IRQ5 separately */
> +	if (base == AXP192_IRQ1_EN)
> +		return AXP192_IRQ5_EN;
> +
> +	return AXP192_IRQ5_STATE;
> +}
> +
> +static const struct regmap_irq_chip axp192_regmap_irq_chip = {
> +	.name			= "axp192_irq_chip",
> +	.status_base		= AXP192_IRQ1_STATE,
> +	.ack_base		= AXP192_IRQ1_STATE,
> +	.unmask_base		= AXP192_IRQ1_EN,
> +	.init_ack_masked	= true,
> +	.irqs			= axp192_regmap_irqs,
> +	.num_irqs		= ARRAY_SIZE(axp192_regmap_irqs),
> +	.num_regs		= 5,
> +	.get_irq_reg		= axp192_get_irq_reg,

Fix me:

drivers/mfd/axp20x.c:634:35: error: initialization of 'unsigned int (*)(struct regmap_irq_chip_data *, unsigned int,  int)' from incompatible pointer type 'int (*)(unsigned int,  int)' [-Werror=incompatible-pointer-types]
  634 |         .get_irq_reg            = axp192_get_irq_reg,
      |                                   ^~~~~~~~~~~~~~~~~~
drivers/mfd/axp20x.c:634:35: note: (near initialization for 'axp192_regmap_irq_chip.get_irq_reg')

> +};
> +
>  static const struct regmap_irq_chip axp20x_regmap_irq_chip = {
>  	.name			= "axp20x_irq_chip",
>  	.status_base		= AXP20X_IRQ1_STATE,
> @@ -588,6 +708,32 @@ static const struct regmap_irq_chip axp809_regmap_irq_chip = {
>  	.num_regs		= 5,
>  };
>  
> +static const struct mfd_cell axp192_cells[] = {
> +	{
> +		.name		= "axp192-gpio",
> +		.of_compatible	= "x-powers,axp192-gpio",
> +		.num_resources	= ARRAY_SIZE(axp192_gpio_resources),
> +		.resources	= axp192_gpio_resources,
> +	}, {
> +		.name		= "axp192-adc",
> +		.of_compatible	= "x-powers,axp192-adc",
> +	}, {
> +		.name		= "axp20x-battery-power-supply",
> +		.of_compatible	= "x-powers,axp192-battery-power-supply",
> +	}, {
> +		.name		= "axp20x-ac-power-supply",
> +		.of_compatible	= "x-powers,axp202-ac-power-supply",
> +		.num_resources	= ARRAY_SIZE(axp192_ac_power_supply_resources),
> +		.resources	= axp192_ac_power_supply_resources,
> +	}, {
> +		.name		= "axp20x-usb-power-supply",
> +		.of_compatible	= "x-powers,axp192-usb-power-supply",
> +		.num_resources	= ARRAY_SIZE(axp192_usb_power_supply_resources),
> +		.resources	= axp192_usb_power_supply_resources,
> +	},
> +	{	.name		= "axp20x-regulator" },
> +};
> +
>  static const struct mfd_cell axp20x_cells[] = {
>  	{
>  		.name		= "axp20x-gpio",
> @@ -865,6 +1011,12 @@ int axp20x_match_device(struct axp20x_dev *axp20x)
>  		axp20x->regmap_cfg = &axp152_regmap_config;
>  		axp20x->regmap_irq_chip = &axp152_regmap_irq_chip;
>  		break;
> +	case AXP192_ID:
> +		axp20x->nr_cells = ARRAY_SIZE(axp192_cells);
> +		axp20x->cells = axp192_cells;
> +		axp20x->regmap_cfg = &axp192_regmap_config;
> +		axp20x->regmap_irq_chip = &axp192_regmap_irq_chip;
> +		break;
>  	case AXP202_ID:
>  	case AXP209_ID:
>  		axp20x->nr_cells = ARRAY_SIZE(axp20x_cells);
> diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h
> index 9ab0e2fca7ea..c9a9ee8ec246 100644
> --- a/include/linux/mfd/axp20x.h
> +++ b/include/linux/mfd/axp20x.h
> @@ -12,6 +12,7 @@
>  
>  enum axp20x_variants {
>  	AXP152_ID = 0,
> +	AXP192_ID,
>  	AXP202_ID,
>  	AXP209_ID,
>  	AXP221_ID,
> @@ -24,6 +25,7 @@ enum axp20x_variants {
>  	NR_AXP20X_VARIANTS,
>  };
>  
> +#define AXP192_DATACACHE(m)		(0x06 + (m))
>  #define AXP20X_DATACACHE(m)		(0x04 + (m))
>  
>  /* Power supply */
> @@ -45,6 +47,13 @@ enum axp20x_variants {
>  #define AXP152_DCDC_FREQ		0x37
>  #define AXP152_DCDC_MODE		0x80
>  
> +#define AXP192_USB_OTG_STATUS		0x04
> +#define AXP192_PWR_OUT_CTRL		0x12
> +#define AXP192_DCDC2_V_OUT		0x23
> +#define AXP192_DCDC1_V_OUT		0x26
> +#define AXP192_DCDC3_V_OUT		0x27
> +#define AXP192_LDO2_3_V_OUT		0x28
> +
>  #define AXP20X_PWR_INPUT_STATUS		0x00
>  #define AXP20X_PWR_OP_MODE		0x01
>  #define AXP20X_USB_OTG_STATUS		0x02
> @@ -139,6 +148,17 @@ enum axp20x_variants {
>  #define AXP152_IRQ2_STATE		0x49
>  #define AXP152_IRQ3_STATE		0x4a
>  
> +#define AXP192_IRQ1_EN			0x40
> +#define AXP192_IRQ2_EN			0x41
> +#define AXP192_IRQ3_EN			0x42
> +#define AXP192_IRQ4_EN			0x43
> +#define AXP192_IRQ1_STATE		0x44
> +#define AXP192_IRQ2_STATE		0x45
> +#define AXP192_IRQ3_STATE		0x46
> +#define AXP192_IRQ4_STATE		0x47
> +#define AXP192_IRQ5_EN			0x4a
> +#define AXP192_IRQ5_STATE		0x4d
> +
>  #define AXP20X_IRQ1_EN			0x40
>  #define AXP20X_IRQ2_EN			0x41
>  #define AXP20X_IRQ3_EN			0x42
> @@ -153,6 +173,11 @@ enum axp20x_variants {
>  #define AXP20X_IRQ6_STATE		0x4d
>  
>  /* ADC */
> +#define AXP192_GPIO2_V_ADC_H		0x68
> +#define AXP192_GPIO2_V_ADC_L		0x69
> +#define AXP192_GPIO3_V_ADC_H		0x6a
> +#define AXP192_GPIO3_V_ADC_L		0x6b
> +
>  #define AXP20X_ACIN_V_ADC_H		0x56
>  #define AXP20X_ACIN_V_ADC_L		0x57
>  #define AXP20X_ACIN_I_ADC_H		0x58
> @@ -182,6 +207,8 @@ enum axp20x_variants {
>  #define AXP20X_IPSOUT_V_HIGH_L		0x7f
>  
>  /* Power supply */
> +#define AXP192_GPIO30_IN_RANGE		0x85
> +
>  #define AXP20X_DCDC_MODE		0x80
>  #define AXP20X_ADC_EN1			0x82
>  #define AXP20X_ADC_EN2			0x83
> @@ -210,6 +237,16 @@ enum axp20x_variants {
>  #define AXP152_PWM1_FREQ_Y		0x9c
>  #define AXP152_PWM1_DUTY_CYCLE		0x9d
>  
> +#define AXP192_GPIO0_CTRL		0x90
> +#define AXP192_LDO_IO0_V_OUT		0x91
> +#define AXP192_GPIO1_CTRL		0x92
> +#define AXP192_GPIO2_CTRL		0x93
> +#define AXP192_GPIO2_0_STATE		0x94
> +#define AXP192_GPIO4_3_CTRL		0x95
> +#define AXP192_GPIO4_3_STATE		0x96
> +#define AXP192_GPIO2_0_PULL		0x97
> +#define AXP192_N_RSTO_CTRL		0x9e
> +
>  #define AXP20X_GPIO0_CTRL		0x90
>  #define AXP20X_LDO5_V_OUT		0x91
>  #define AXP20X_GPIO1_CTRL		0x92
> @@ -287,6 +324,17 @@ enum axp20x_variants {
>  #define AXP288_FG_TUNE5             0xed
>  
>  /* Regulators IDs */
> +enum {
> +	AXP192_DCDC1 = 0,
> +	AXP192_DCDC2,
> +	AXP192_DCDC3,
> +	AXP192_LDO1,
> +	AXP192_LDO2,
> +	AXP192_LDO3,
> +	AXP192_LDO_IO0,
> +	AXP192_REG_ID_MAX
> +};
> +
>  enum {
>  	AXP20X_LDO1 = 0,
>  	AXP20X_LDO2,
> @@ -440,6 +488,42 @@ enum {
>  	AXP152_IRQ_GPIO0_INPUT,
>  };
>  
> +enum axp192_irqs {
> +	AXP192_IRQ_ACIN_OVER_V = 1,
> +	AXP192_IRQ_ACIN_PLUGIN,
> +	AXP192_IRQ_ACIN_REMOVAL,
> +	AXP192_IRQ_VBUS_OVER_V,
> +	AXP192_IRQ_VBUS_PLUGIN,
> +	AXP192_IRQ_VBUS_REMOVAL,
> +	AXP192_IRQ_VBUS_V_LOW,
> +	AXP192_IRQ_BATT_PLUGIN,
> +	AXP192_IRQ_BATT_REMOVAL,
> +	AXP192_IRQ_BATT_ENT_ACT_MODE,
> +	AXP192_IRQ_BATT_EXIT_ACT_MODE,
> +	AXP192_IRQ_CHARG,
> +	AXP192_IRQ_CHARG_DONE,
> +	AXP192_IRQ_BATT_TEMP_HIGH,
> +	AXP192_IRQ_BATT_TEMP_LOW,
> +	AXP192_IRQ_DIE_TEMP_HIGH,
> +	AXP192_IRQ_CHARG_I_LOW,
> +	AXP192_IRQ_DCDC1_V_LONG,
> +	AXP192_IRQ_DCDC2_V_LONG,
> +	AXP192_IRQ_DCDC3_V_LONG,
> +	AXP192_IRQ_PEK_SHORT = 22,
> +	AXP192_IRQ_PEK_LONG,
> +	AXP192_IRQ_N_OE_PWR_ON,
> +	AXP192_IRQ_N_OE_PWR_OFF,
> +	AXP192_IRQ_VBUS_VALID,
> +	AXP192_IRQ_VBUS_NOT_VALID,
> +	AXP192_IRQ_VBUS_SESS_VALID,
> +	AXP192_IRQ_VBUS_SESS_END,
> +	AXP192_IRQ_LOW_PWR_LVL = 31,
> +	AXP192_IRQ_TIMER,
> +	AXP192_IRQ_GPIO2_INPUT = 37,
> +	AXP192_IRQ_GPIO1_INPUT,
> +	AXP192_IRQ_GPIO0_INPUT,
> +};
> +
>  enum {
>  	AXP20X_IRQ_ACIN_OVER_V = 1,
>  	AXP20X_IRQ_ACIN_PLUGIN,

-- 
Lee Jones [李琼斯]
Principal Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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